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Bindi L , Cipriani C , The Canadian Mineralogist , 42 (2004) p.835-840, The crystal structure of skippenite, Bi2Se2Te, from the Kochkar deposit,, southern Urals, Russian Federation, Locality: Kochkar deposit, southern Urals, Russia
Physical Properties of Skippenite
Cleavage:
{0001} Perfect
Color:
Steel gray.
Diaphaneity:
Opaque
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness:
2.5 - Finger Nail
Luster:
Metallic
Streak:
black
Optical Properties of Skippenite
RL Anisotrophism:
Moderate, blue to bluish gray.
RL Color:
White with a yellow tint.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Skippenite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
420 nm
41.00
43.00
440 nm
44.60
46.10
460 nm
46.50
47.80
480 nm
47.70
48.80
500 nm
48.30
49.50
520 nm
48.70
50.00
540 nm
49.00
50.30
560 nm
49.10
50.40
580 nm
49.10
50.40
600 nm
49.20
50.50
620 nm
49.30
50.60
640 nm
49.40
50.80
660 nm
49.40
50.80
680 nm
49.40
50.80
700 nm
49.40
50.80
Calculated Relative Intensity Colors of Skippenite in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
200%
R1
R2
Calculated Properties of Skippenite
Electron Density:
Bulk Density (Electron Density)=6.25 gm/cc note: Specific Gravity of Skippenite =7.67 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PESkippenite =1,287.16 barns/electron U=PESkippenite x rElectron Density=8,047.96 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Skippenite is Not Radioactive
Skippenite Classification
Dana Class:
02.11.07.06(02)Sulfides - Including Selenides and Tellurides